Wolf CGB-75 - Page 20

20 3062555_201804
10.Installation
Gasconnection
Fig.: Straight-through gas ball valve (accessory)
Onlyalicensedgasttermayroutethegaspipe
andmakethegasconnections.Closethegas
ballvalveonthecondensingboilertopressure
testthegaspipe.
Removeallresiduesfromtheheatingpipework
andthegaspipepriortoconnectingthecon-
densingboiler,particularlyinoldersystems.
Priortocommissioning,testallgaspipesand
connectionsforleaksaccordingtoTRGI.Only
foaming leak detection sprays which are ap-
provedbytheDVGWshouldbeused.
Inappropriate installation or using unsuitable
components or assemblies may lead to gas
escaping,whichresultsinariskofpoisoning
andexplosion.
Install a gas ball valve with fire protection
in the gas supply line upstreamof the Wolf
condensingboiler.Otherwiseexplosionsmay
occurifthereisare.Sizethegassupplypipe
in accordance with DVGW-TRGIregulations
[Germany].
Gasttingsontheappliancemayonlybepres-
sure-testedtoamaximumof150mbar.Higher
pressuremaydamagethegastrain,resultingin
ariskofexplosion,asphyxiationorpoisoning.
Closethegasballvalveonthegascondensing
centretopressuretestthegaspipe.
Mountthegasballvalveinaneasilyaccessible
place.
- Prior to installation, ensure that the boiler corresponds to the
local gas type. The factory settings for the particular type of
gas can be obtained from the following table.
Table: Factory setting according to gas type
1)
Not applicable for Austria/Switzerland
2)
Does not apply to Switzerland
NaturalgasE/H:
Ws=11.4-15.2kWh/m
3
=40.9-54.7MJ/m
3
NaturalgasLL:
1)
Ws= 9.5-12.1kWh/m
3
=34.1-43.6MJ/m
3
LPG P:
2)
Ws=20.2-21.3kWh/m
3
=72.9-76.8MJ/m
3